Pipe-fitting



No. 624,|93. Patented may 2, |899.

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PIPE FITTING.

(Application led Oct. 9, 1896. Renewed Feb. 6, 1899.)

(No Model.)

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l lUNITED STATES PATENT OFFICE;

CHARLES w. DIETRICH, CF CHICAGO, ILLINois;

PIPE-FITTING" SPECIFICATION forming part of Letters Patent No. 624,193, dated May 2, 1899.

Application iiled October 9, 1896. Renewed February 6, 18997. Serial No. 704,736. (No model.) Y

To all whom t may concern.- Y Be it known that I, CHARLES W. DIETRICH, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Pipe-Fittings, of which the following is a speciiication.

This invention relates to improvements in pipe-fittings, and refers more specifically to a device specially intended for application to prevent or stop leakage of the unions or connecting joints of steam or other pipes which have already been connected up or installed in working plants. 4 The object of the invention is to provide a simple and convenient packing device which may be applied to the exterior of the pipe without disconnecting the latter from its communicating member and which will serve to effectually prevent any leakage of the union.

The invention consists in the matters hereinafter described, and more particularly pointed out in the appended claims, and may be more readily understood by reference t'o the accompanying drawings, in which- Figure 1 is a plan view of the device shown as applied to an ordinary steam-pipe union. Fig. 2 is an axial sectional View of the same.

Referring to the drawings, A A designate the meeting ends of two ordinary steam-pipes, and A2 a common union serving to connect said pipes in the usual manner.

B designates a confining-ring conveniently and as herein shown made in two semicircular sections, the ends of which are united by' means of external ears b, through which are inserted clamping-bolts bf.. The internal diameter of said ring B is considerably greater than the external diameter of the pipe-section A, upon which it is designed to be placed, so as toaord an annular space between its interior and the outer surface of the ,pipe A for the reception of one or more'packing-rings C C. The confining-ring B is adapted to-be placed immediately adjacent to or against the end ct of the union A2, and that end of said confining-ring which rests against the end of the said union is provided with an annular inturned flange b2, which serves to contract the internal diameter of the confining-rin g at this point to a diameter but slightly greater than the external diameter of the pipe-section A.

shown, constructed and arranged as follows:

D designates a clampin gring, which for corr venience of application is also made in a plurality of sections-in this instance twounited by means of radially-extending webs or ears d, through which are inserted clampingbolts d'fthe interior diameter of one end portionof said clamping-ring D and the length of its several sections being such that it is adapted to be clamped tightly or rigidly upon the pipe-section A by means of the said clamping-bolts d. The opposite end, or that end toward theunion Apis interiorly enlarged, as at d2, and screw-threaded to receive one end c of a compressing-ring E. The compressingring E is likewise composed cfa pluralityv of sections united by webs or ears d3 and bolts d4 in a manner similar to theI previously described rings and is of such diameter as to fit snugly but easily upon the exterior of the pipesection A, so as to be capable of movement thereon. The forward end e' of the compressing-ring E is constructed to fit easily within the larger end of the confining-ring B and acts as a piston or compressing device to compress the packing-ring sections C C within vsaid confining-ring when the compressing-ring is Y screwed forwardly by turning it inthe proper direction within the clamping-ring D.

In order to protect the rear side of the rearmost packing-ring C and to lessen the friction between said ring and the end of the compressing-ring, I preferably interpose a metal washer or ring F, which is also conveniently formed in a plurality of sections.

In order to afford means for rotating the compressing-ring E, said ring is conveniently, and as herein shown, provided with a plurality of radially-extending apertures e2, within which may be inserted the ends of a suitable spanner or lever. Obviously, if preferred,

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the ring-sections may be faceted for the engagement of a wrench.

The operation of the device Will be fully understood from the foregoing description and need not be herein further set forth. It will be further obvious that the packing or iittingy pecially valuable-for Vpreventing leakage in j the-joints of relatively large pipes, especially suchrasare-subject,to-repeated and extreme variations ottemperature, it being well understood that suchunions are especially trou-H blesome becauseof' leakage.d

While I have hereinshown what I deeml to bea practical and preferred construction, yet

itis'rto be understood that `the inventionis capable'offembodiment in various* modicationsW-ithout departure from the spirit of `the invention-and Without involving more than ordinary mechanical skill. I do not thereforev `Wislh'tobe limited to the details set forth `eX- cept as -inadethe subject of specific claim-s; but-i What I claim as my invention is;

1.'.'lh`e-c0mbination with a union'or the like,and aninserted-pipe,of a detachable conlining-ring of larger diameter than thepipe surrounding-the `latter at its-juncturefwith the union,- an'annularpacking within the confining-.ring,a detachableclampin g-ring adaptedtofbe'securedto thepipe, and an annular pistou having r,screw threaded vengagement with the clamping-ring'and entering the con*- ning-ring 'to compressvtheV packing therein against the-union;-

2.. Thecombination Witha steam orfother pipa-'having its end -tted Within a second communicatingmember, of an external packing-forsaid union', comprising a compressible packing-ring `arranged `tovencircle said pipe at its point-of entrance withinv the othermembelg-a coniining-ring, composedA of a plurality of separable segmental sections, arranged to encircle said packing-'ring-'and provided at its end adjacent to the communicating member with an inturned flange, a compressingring also composed of a plurality of separable segmental sections, arranged to iit loosely upon the pipe, constructed to fit at one end Within the end of the confining-ring so as to `.form an annular piston adapted to act upon the packing therein and externally screwthreaded at its opposite end and a clampingring composedy of` al plu ralityjof separable segmental sections adapted to be clamped tightly upon the pipe adjacent to the compressingring, said clamping-ring being of enlarged interior diameter at its end adjacent to thecompressingring and* beinginternallyv screwthreaded "for engagement With the'latt'er.' j

3.l The combination"Witlra steam y or other pipe, having- 'its' end itted; fwithin av f second communicating member, of an external packing for-said union, comprising'acompressible packing-ring arrangedI to encircle said pipe at its point ofentrance Withintheother meinber,Y a confining-ring, composed' of"`a plurality l.of separable segmental sectionsfarrangedto encircle said 'packing-ring l'and' lprovided at its end adjacent to the communicating member with' aninturned flange, a'con'lpressingring also `composed'of-a plu ralityof'separable segmental"l sections, arranged` to' :fit loosely uponfthe fpipe, 'constructed 'tojfit at "oneend within theend of "the-'contining-ring=so'=as to form an annular 'piston adapted to act upon the'packing thereinV and 'externally screwthreadedat-,it's opposite end;l a Washerinterposed between the endofthe compressing-ring and packing, and a clampingiring Acomposed vof a plurality of' separable'segmental sections adapted to lbesclamped 'tightly upon the pipe adjacent to the'compressingring,saidlamping-ring being-of enlarged interior 'diameter atl its end *adjacent to rthe'compressing-ring and being internally screw-threaded 'for engagement With 'the latter;

In testimonythatI claim tlieforegoing 'as' my inventionI ,hereunto'aftix myfsign'atura in presence of two'witnes's'es; thi'sthday of Gcto'b-er, 1896: Y' y CHARLESW. DIETRICH.

Witnesses: j

ALBERT H. GRAVES,v HENRY W; CARTER.;

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